Bicycle-lock.



Patented Ian. 2l, I902.

0. H. HANSEN.

' BICYCLE LUCK. (Application filed sn k. 2a. 1901.

(No Model.)

m: moms PETERS m. PNOTO-U'IHQ, WASHINGTON. a. c

V UNITED STATES PATENT OFF CE.

OSlVALD H. HANSEN, OF MILWAUKEE, VISCONSIN.

BICYCLE-LOCK.

SEEGIFICATION forming part of Letters Patent No. 691,374, dated January21, 1902. Application fina Septe'mher 23,1901. Serial No. 76,156. (Nomodel.

To all whom, it may concerw Be it known that I, OsWAL H. HANSEN,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin,have invented a new and useful Improvement in Bicycle- Locks,of which the following is a description,

reference being had to the'accompanyingdrawings,which are a part of thisspecification.

My invention has relation to improvements in bicycle-locks.

The object of the invention is to provide an improved construction oflock adapted when the machine is not being ridden to be thrown intoengagement with the sprocket-chain, and hence thereby prevent anytransmission of force from the propelling power, and when it is desiredto propel the machine said looking mechanism adapted by a simpleadjustment to be thrown out of locking engagement with thesprocket-chain.

"A further object had in view is the provision of simple meansforattaching thelocking mechanism to and detaching the same from theframe of the bicycle.

With the above primary and other incidental objects in View theinvention consists of the devices and parts or their equivalents, ashereinafter set forth.

In the accompanying drawings, Figure 1 is a side elevation showing myimproved locking mechanism applied to one of the lower rearfork membersof the bicycle-frame. Fig. 2 is a similar view to Fig. 1, but showingthe casing of the locking mechanism in section. Fig. 3 is a verticalsectional view on the line 3 3 of Fig. 2, and Fig. 4 is a horizontalsectional view on the line 4 4: of Fig. 2.

Referring to the drawings, the numeral 5 indicates one of the members ofthe lower rear fork of the bicycle-frame to which my improved lockingmechanism is secured. This locking mechanism is inclosed in an outercasing 6 of any desirable form, but pref-.

erably of the form shown in the accompanying drawings. Projecting fromthe under side of this casing is an interiorly-threaded tube 7.A'bowedclamping-spring 8 is adapted to embrace the member 5 of the rearfork and is tightly clamped thereto by means of a bolt 9, passed throughregistering openings in flanges 10 10, depending from the clampingmembers, said bolt.haviug a head at one end and having its opposite endthreaded to receive a nut 11, which nut when turned in one directionacts to draw the ends of the clamping members together. From the upperside of the bowed clamping-spring extends a threaded stem 12, which isadapted to be screwed into the tube 7, and thereby connect the casing ofthe locking mechanism to the clamp. This stem may be in the form of anordinary screw turned through the clamping member and into the tube 7,as shown in the drawings. Washers 13 may be interposed between the upperside of the clamp and the under side of the tube 7 in order to elevatethe locking mechanism the required distance to engage the sprocket-chain14,said sprocketchain passing'through oppositelyarranged openings 15. 15in the upper projecting portion of the casing.

Journaled in the sides of the casing is a shaft 16, and on this shaft ismounted a Wheel 17, said wheel havinga series of teeth 18 projectingperipherally therefrom. These teeth are preferably of pyramidal form incrosssection,so as to be readilyengaged by the teeth of thesprocket-chain when said sprocketchain is put in motion. It willtherefore be understood that the Wheel 17 is so disposed below thesprocket-chain that when the bicycle is in motion the sprocket-chainwill act on the teeth of the wheel and thereby rotate the same. It willbe understood also that the locking mechanism is adjusted so as topermit free rotation of the wheel17 only when itis desired that thebicycleshall be propelled. The spocket-chain is prevented from jumpingupwardly in the casing by means of an antifriction-roller 19, mounted inthe upper portion of the casing above the sprocketchain.

Jou'rnaled in the casing on opposite sides w of the periphery of thewheel 17 are upright- ..upon each of the upright shafts 2O are disks 2323, the periphery of each of said disks being provided with aninwardly-extending recess 24. Each upright shaft is provided near itslower end with a laterallyextending lug 25.

Within the lowerportion of the casing and between the upright shafts isa pivoted plate 26, the pivots or pintles being at the lower corners ofsaid plate. Pivoted to and extending from one face of this plate is apull-rod 27, said rod extending freely through an opening therefor inthe casing, and being pro vided on its outer end with an enlargementorhead for convenience in pressing the finger thereagainst. The rearface of the plate 26 at the lower edge thereof is provided with aprojecting foot 28, which when the plate is thrown upwardly is adaptedto rest on the metal in the bottom of the casing and thereby support theplate in an upright position.

When the plate is in this upright position and when the handles 21 21are turned to a certain position, the opposite ends of said plate willengage the ends of the lugs 25 of the upright shafts 20 20, as clearlyshown in Fig. 2, and hence prevent said shafts from turning.

In the operation of myinvention if it is desired that the sprocket-chainshall run freely, so as to permit aperson to ride the machiue,thehandles 21 21 are turned to such position as to bring the recesses 2 1of the disks 23 in position to permit the teeth 18 of the wheel 17 topass freely through said recesses. The extentof the turning of thehandles to effect this result is determined by the scale measurements onthe outside of the casing. For instance, the parts may be so regulatedthat when the handles 21 is turned to the 4 mark on the scale 22 thenthe upright shaft 20 will be turned suificiently far to bring the recessof the disk 23 relating thereto in proper position to permit the teeth18 to pass freely therethrough, and when the handle 21 is turned to the3 mark on the scale 22 the upright shaft 20 will have been turnedsufficiently far to bring the recess of its disk in position to permitsaid teeth 18 to pass therethrough. It is desirable that the two handlesbe turned to different points on the scales, so as preclude thepossibility of a person readily obtaining the combination merely byexperiment.

1 When the disks are turned so as to permit the teeth 18 to passtherethrough as the Wheel 17 is revolved, it is necessary that saiddisks should be held securely in that position, as

should there be an accidental turning of the upright shafts sufficientto throw the recesses of'the disks out of alinement with the teeth 18 itwould result in said teeth striking the solid portions of the disks, andthereby looking the sprocket-chain, and consequently bringing themachine to a sudden standstill.

'It is for this reason that I provide the lugs 25and the pivoted plate26, which lugs when the upright shafts are turned so as to bring therecesses of the disks in line with the teeth and when the plate 26 is inan upright position arein line to be engaged by the ends ofsaid plate,and consequently the upright shafts are securely locked or wedgedagainst accidental turning. When the rider dismounts and it is desiredto lock the ma chine, the rod 27 is pulled outwardly, as indicated inFig. 3, the extent of outward pulling being limited by a stop 29 on saidrod, and this pulling outwardly of the rod causes the pivoted plate 26to be turned forwardly out of line with the lugs 25, and hence theuprightshafts 20 20 are free to be turned by the handles 21 21 until therecesses of the disks 23 are out of line with the teeth 18. When soturned, it is obvious that the wheel 17 cannot be rotated, owing to thefact that the teeth 18 thereof, will strike against the solid portionsof the disk 23, and hence the sprocket-chain is effectually lockedagainst movement. The extent to which the shafts are turned to effectthe result just stated is also determined by the scalesthat is to say,the handle 21 may be turned to a certain indicated point on the scale 22and the handle 21 to a certain indicated pointon the scale 22.

It will be seen that my device can be readily connected to anddisconnected from the bicycle-frame. In order to connect to the forkmember 5, it is only necessary to adjust the clamp 8 thereto and draw upon the bolt 9. The sprocket-chain can then be passed through theopenings 15 15 and adjusted around the sprocket-wheel, and then the endsof said chain connected. In removing the locking mechanism from themachineit is only necessary to disconnect the ends of the sprocket-chainand then draw said chain shafts and two of the disks 23, yet I do notwish to be understood as limiting myself thereto, inasmuch as only oneof said shafts and disks might be used and successful results obtainedwithout departing from the spirit and scope of my invention. ever, toemploy the construction shown in the drawings, inasmuch as thereby theparts can be adjusted so that it is necessary for the two handles to beturned to different points of the scales in order to effect the lockingand unlocking.

What I claim as my invention is- 1. In a bicycle-lock, the combinationof a casing secured to the'frame of a bicycle, a normally rotatablewheel in said casing and provided with projecting teeth engaged by theteeth of the sprocket-chain of the bicycle, and means for locking saidwheel so as to prevent rotation thereof.

2. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, a

'wheel rotatable in saidcasing and provided I prefer, howwith projectingteeth adapted to be engaged by the teeth of the sprocket-chain of thebicycle, an upright shaft in the casing, a disk mounted on the shaft,said disk provided with a recess extending inwardly from the peripherythereof, and means for rocking the shaft so as to bring the recess ofthe disk into and out of alinement with the teeth of the wheel.

3. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, a wheel rotatable in said casing and provided withprojecting teeth adapt-ed to be engaged by the teeth of thesprocket-chain of the bicycle, an upright shaft in the casing, a diskmounted on said shaft and having a recess extending inwardly from theperiphery thereof, means for rocking the shaft so as to bring the recessof the disk into and out of alinement with the teeth of the wheel, andmeans for holding the shaft against turning when the recess of the diskis in alinement with the teeth of the wheel.

4. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, a wheel rotatable in said casing and provided withprojecting teeth adapted to be engaged by the teeth of thesprocket-chain of the bicycle, an upright shaft in the casing, the upperend of said shaft extending through the casing and provided with acrank-handle exterior of said casing, and a disk mounted on the shaft,said disk provided with a recess extending inwardly from the peripherythereof, the said recess of the disk, when the disk is rotated by theupright shaft to a certain position in one direction, adapted to bebrought into alinement with the teeth of the wheel, and said recess ofthe disk, when the disk is rotatedby the upright shaft to a certainposition in the opposite direction, adapted to be brought out ofalinement with the teeth of the wheel.

5. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, said casing provided exteriorly with a graduated scale, awheel rotatable in the casingand provided with projecting teeth adaptedto be engaged by the teeth of the sprocket-chain of the bicycle, anupright shaft in the casing, the upper end of said shaft extendingthrough the casing and provided with a crank-handle exterior of thecasing,said crank-handle adapted to work over the graduated scale of theeasing, and a disk mounted on the shaft and provided with a recessextending inwardly from the periphery thereof, the said recess adapted,when the disk is rotated by the upright shaft to a certain indicatedscale position in one direction, to be brought into alinement with theteeth of the wheel, and said recess of the disk adapted when said diskis rotated by the upright shaft to a certain indicated scale position inthe opposite direction, to be brought out of alinement with the teeth ofthe wheel.

6. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, a normally rotatable wheel in said casing and providedwith projecting teeth adapted to be engaged by the teeth of thesprocket-chain of the bicycle, upright shafts in the casing, disksmounted on said shafts, each disk provided with a recess extending fromthe periphery thereof inwardly, and means for rocking said shafts so asto bring the recesses of the disks into and out of alinement with theteeth of the wheel.

7. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, a

normally rotatable wheel in said casing, and provided with projectingteeth adapted to be engaged by the teeth of the sprocket-chain of thebicycle, upright shafts in the casing, disks mounted on said shafts,each disk provided with a recess extending from the periphery thereofinwardly, and means for imparting variable rocking motions to saidshafts, said variable rocking motions in one direction turning theshafts the required distances to bring the recesses of the disks intoalinement with the teeth of the wheel, and the variable rocking motionsin the opposite direction bringing the recesses of the disks out ofalinement with the teeth of the wheel.

8. In a bicycle-lock, the combination of a casing secured to the frameof a bicycle, said casing provided exteriorly with graduated scales, anormally rotatable wheel in the casing and provided with projectingteeth adapted to be engaged by the teeth of the sprocketchain of thebicycle, upright shafts in the casing, said shafts having their upperends extending through the casing, crank-arms or handles connected tosaid upper ends of the shafts and working over the graduated scales,disks mounted on the upright shafts, each disk provided with a recessextending inwardly from the periphery thereof, the recesses of saiddisks, when the disks are turned to a certain extent by the uprightshafts as indicated by the graduated scales, adapted to be brought intoand out of alinement with the teeth of the wheel, in accordance with thedirection of the turning of said disks.

9. In a bicycle-lock, the combination of acasing secured to the frame ofa bicycle, a wheel rotatable in said casing and provided with projectingteeth adapted to be engaged by the sprocket-chain of the bicycle, anupright shaft in the casing, said shaft provided with a projecting lug,a disk mounted on the shaft and having a recess extending inwardly fromits periphery, means for rocking said shaft so as to bring the recess ofthe disk into and out of alinement with the teeth of the wheel, apivoted plate in the casing, and means for turning said plate to andfrom an upright position, the end of the plate, when said plate isturned to an upright position, and when the upright shaft is turned to aposition to bring the recess of the disk in alinement with the teeth ofthe wheel, adapted to engage against the lug of the upright shaft andthereby hold the disk in adjusted position.

10. In a bicycle-lock, the combination of a &

casing secured to the frame of a bicycle, a Wheel rotatable in saidcasing and provided with projecting teeth adapted to be engaged by thesprocket-chain of the bicycle, an upright shaft in the casing, saidshaft provided with a projecting lug, a disk mounted on the shaft andhaving a recess extending inwardly from its periphery, means for rockingthe shaft so as to bring the recess of the disk into and out ofalinement with the teeth of the Wheel, a pivoted plate in the casing,and apull-rod secured to said plate and extending outwardly therefromthrough the casin g, said rod when manipulated adapted to turn the plateto and from an uprightposition, the end of the plate, when said plate isturned to an upright position, and when the upright shaft is turned to aposition to bring the recess of the disk into alinement with the teethof the wheel, adapted to engage against the lug of the upright shaft andthereby hold the disk in adjusted position.

11. In abicycle-lock, the combination of a casing secured to the frameof a bicycle, a wheel rotatable in the casing and provided withprojecting teeth adapted to be engaged by the sprocket-chain of thebicycle, upright shafts in the casing, each of said shafts provided witha projecting lug, a disk mounted on each upright shaft, each disk havinga recess extending inwardly from its periphery,

means for rocking said shafts so as to bring the recesses of therdisksinto and out of alinement with the teeth of the Wheel, a pivoted platein the casing, and means for turning said plate to andfrom an uprightposition, the ends of the plate, when said plate is turned to an uprightposition, and when the upright shafts are turned to a position to bringthe recesses of the disks into alinement with the teeth of the wheel,adapted to engage against the lugs of the upright shafts and therebyhold the disks in adjusted position.

12. In a bicycle-lock, the combination of a clamp' adapted to be clampedto one of the tubes of the bicycle-frame, a threaded stem extendingupwardly from the clamp, a casing provided with a depending threadedportion which the threaded stem of the clamp is adapted to engage, anormally rotatable wheel in the casing, and provided with projectingteeth adapted to be engaged by the teeth of the sprocket-chain of thebicycle, and means for locking said Wheel so as to prevent rotationthereof.

In testimony whereof I affix my signature in presence of two witnesses.

OSW'ALD H. HANSEN.

\Vitnesses:

A. L. MORSELL, ANNA V. FAUST.

